1 files changed, 2 insertions, 1 deletions
diff --git a/src/Persistence_representations/include/gudhi/Persistence_weighted_gaussian.h b/src/Persistence_representations/include/gudhi/Persistence_weighted_gaussian.h
index f824225a..d5c8e6d7 100644
--- a/src/Persistence_representations/include/gudhi/Persistence_weighted_gaussian.h
+++ b/src/Persistence_representations/include/gudhi/Persistence_weighted_gaussian.h
@@ -39,7 +39,6 @@
 #include <functional>
 #include <boost/math/constants/constants.hpp>
 
-double pi = boost::math::constants::pi<double>();
 using PD = std::vector<std::pair<double,double> >;
 using Weight = std::function<double (std::pair<double,double>) >;
 
@@ -88,6 +87,8 @@ class Persistence_weighted_gaussian{
     int approx;
 
  public:
+ 
+  double pi = boost::math::constants::pi<double>();
 
   /** \brief Persistence Weighted Gaussian Kernel constructor.
    * \ingroup Persistence_weighted_gaussian